Firebird Database, created by the Firebird Foundation, is an open source database management system that can run on Windows, Linux, and MacOS. Firebird Database includes features that are common in RDBMS database systems, such as the ability to store and access data in relational tables, transaction support, data recovery, stored procedure processing, and triggers. It supports a variety of programming languages, including SQL and some high-level languages like Delphi and C++.